Wireless Multifunctional Waterproof Bluetooth Speaker

Product information: Type: Bluetooth speaker Connection method: Bluetooth connection Interface type: USB Battery capacity: 4400 mA Frequency response range: 100HZ-20KHZ Output power: 15W*2 Signal to noise ratio: ≥75dB Power supply mode: Built-in lithium battery Channel: 2 Play time: 6 hours Expansion storage: 32GB Bluetooth protocol: 5.0 Number of speakers: 2 Effective distance: 10 meters Function: Radio, call function Operation mode: Button Play format: MP3 Shell material: Plastic Support format: U disk Speaker adjustment method: Button Box material: Plastic Appearance size: 292*132*139mm